diff --git a/build.sbt b/build.sbt
index 24d50417..d2efb135 100644
--- a/build.sbt
+++ b/build.sbt
@@ -4,7 +4,7 @@ resolvers += "Typesafe Releases" at "https://repo.typesafe.com/typesafe/releases
 val akkaVersion = "2.6.19"
 
 val scalaCheck = "org.scalacheck" %% "scalacheck" % "1.15.4"
-val specs2 = "org.specs2" %% "specs2-core" % "4.17.0"
+val specs2 = "org.specs2" %% "specs2-core" % "4.20.9"
 val scalaTest = "org.scalatest" %% "scalatest" % "3.2.14"
 val mockito = "org.mockito" % "mockito-core" % "4.6.1"
 val scalaTestMockito = "org.scalatestplus" %% "mockito-4-6" % "3.2.14.0"